Warp stop-motion for looms.



PATENTED JULY 23, 1907.

G. D. LANNING. WARP STOP MOTION FOR LOOMS.

APPLIOATION FILED JUNE7,1907.

.lL-lLll 111 L ll/llwesses:

'50 the angle brackets 2. Connection is-had between the CHARLES D.LANNING, OF DORCHESTER, MASSACHUSETTS.

, WARP STOP-MOTION non Looms.

To all whom it may concern: I

Be it known that 1,-Crmnniss D. LANNING, a citizen of the United States,residing at Dorchest fi, in the county of Suffolk, State ofMassachusetts, have invented an Improvement in Warp Stop-Motions'forLooms, of which the following description, in connec tion with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting like parts.

My invention relates to warp stop motions for looms, being moreparticularly concerned with, but not limited to, the provision ofimprovements to be used in connection with electrical warp stop motions.

The-invention will be best understood by reference to the followingdescription when taken in connection with the accompanying illustrationof one specific embodiment thereof, the scope of the invention beingmore particularly pointed out in the appended claims.

In the diawing, wherein a single type of the invention is illustrated,Figure 1 is a side elevation of a loom frame with attachments appliedthereto embodying one formof my invention; Fig. 2 is a detail view,partly in side elevation and partly in vertical section, of one,mannerof supporting'the lease rods in accordance with my invention;Fig.3 is a top plan view of a oortion ofthe mechanism illustrated inFig. 2.

In the drawing, Ihave shown my invention as applied to a particularconstruction of loom and a particular type of warp stop motion, but itis to be understood that such isfor the purposeofillustration only, andthat my invention in any desired embodiment thereof may be adapted tolooms and stop motions of other and quite different types, whetherelectrical or mechanical.

Referring to thejdrawings, I have illustrated the side member 1 of aloom provided with a well-known con-, struction of belt shifting device,which is thrown into operation through the action of the drop bars ofthe warp stop motion in a manner .well understood in the art, it beingunnecessary to describe in detail the construction and operation ofsuch'belt shifting device.

In the present instance, L'have shown theloom as provided with circuitestablishing devices for the warp stop motion of thelsarne generalconstruction as is described in Patent No. 690,636 to Ooldwell &Gildard. To the sideQframe-members 1 are adjustably bolted the uprightangle brackets 2, which sustain the various contact devices for the warpstop motion, These may comprise a single tubular contact bar 3 (see Fig.'2) supported at its. ends by suitable insulating plugs,

which maybesecurediu any suitable manner upon tubular contact bar 3 andone side of the circuit leading to the controlling magnet 4 by means ofa contact wire 5 (see Fig. 1), preferably passing through one of theinsulating plugs. The other sideof the circuit, as

will be understood by those skilled in the art, is con- Specification ofLetters Patent. Application filed June 7,1907. Serial No. 377,732.

Patented July 23, 1907.

nected through the frame of the machine to the over head circuit andguiding rods 6 (see Fig. 2), which are shown as converging toward theirupper edges and secured at their opposite ends to lugs projectinginwardly from the brackets 2.

In the present type of my invention, supported' above the contact rods 6upon the brackets 2 and engaging at their ends with inturned studssustained by said brackets are tubular lease members, herein representedas rods 7' and 8, which maintain-the threads of the warp iii aleasedcondition with successive threads crossed in a fashion wellunderstood to those skilled in the art.

Upon successive warp threads are suspended drop bars 9, herein andpreferably arranged in, two sets, the

drop bars of one set being sustained by one series of threads and havingtheir open depending legs embracing oneof' the circuit rods and the dropbars of the other set being sustained by the other series of threads andembracing the other circuit rod. In the illus-- trated construction, asin the aforesaid prior patent,

No. 690,636, the drop bars are provided with closed longitudinal slots10, through each of whiclr'passes'a transverse retaining rod, the rodfor one set of bars be-- ing indicated at 11 and that for the other setbeing indicated at 12. The ends of said retaining rodsare suitablysupported in any desired manner in the brackets 2. It is, of course, tobe understood that any desired form or type of drop or indicating barsmay be employed.

The drop bars and detectors are maintained in accurate contact with thecontact rods 6 under all condi-' tions of use. A break in one of thewarp threads causes v the drop bar supported thereby to fall and contact with the contact bar 3, completing the circuit and energizing theelectro-magnetcontrolling the device for the immediate stoppage oi theloom.

. It is quite desirable that the leasing members? and 8 should socontrol the position of the threads that the desirable relation betweenthe drop bars and the cooperating contact device should be maintainedwithout displacement,v as otherwise vibratory movements of the lay maycause disarrangement of the drop bars relatively to the contact rods.Ithas becn found, however, that if the lease rods be held rigidly andfixedly that increasing frictional resistance is apt -to be put uponthe-warp threads' particularly if theattcndant is careless in adjustingthe warp or the harness. To avoid the enumerated and other objections, Iprcferably mount each'lesse rod for movement in conformmy witli thelevelingor compensating movements of the warp. In the type ofstopl'motion herein selected.

the leasing members 7 and 8 serve hot onlythe usual function common inlooms of separating 'thc warp thrcadsin such manner that the warp feedseasily and the threads are properly separated and control thereof forrepair and manipulationi's rendered easier, but in addition the leasingmembers serve the additional funcno of supporting the warp against theweight-oi the drop bars. Moreover. where the special form of drop 5 barhere-shown is used. the advantages incident thereto of themovements oione' or rnore'oi'the leasing members and preierablyare rigidly connectedto the loom frame, while the warp supporting lease members or rods,'whiclihot only separate the warp but support the satiric-againsttheweight of. the drop bars as above noted'; are given a certain freedomof movement which inns-army is'soconfined as not materially tomove thedropbrirslengthwise oi'the warps, not only is more freedom given to thewarp in its travel by the lease rods' alid ih'rougli the drop bars; butgreater certainty of stopping action of the-stopping mechanism isobtiiinddl A limited movement oi the lease rods or memhers is inorwveradvantageous, because of: the act that in placingn warp in the loomtheweaver or loom fixer may not so adjustthehariiesses thatthe middlepoint of ammo may be in'the'samo plane as the top of the wheel-"rollandthe'lease-irodm This supportiug oi the lease rods so as to permitslight. movement thereoi compensates for this,-us 'wll as permittingslight movethe drop-bar positioned thcrconfallsand is guided by astationary guide bariu'to contact or engagement with theloivo'r"cooperatingdevice entirely free of any fur" ther'niovernent thatmay. be imparted to the warp sup porting lease ro'ds'.--- Not only so,but the movement of tend, if anything, toincrease the tendency of thereleased drop bargon the broken thread to fall All the;

40 advantages lherciore'oi permanently positioned guiding aiid stoppingdcvices are had together with the ad- "vantageoi relatively freelymoving warp supporting bars and'lease rods or members or casting 2 Ipreferably provide straight or right'lineand herein vertically disposedsockets 13 having dovetailed lateraledge-14 as represented in Fig. 3 andmount'in each oisaid sockets 'a'block 15 guided insaid dovtsiledportionsoi'said sockets. "Preferably said blo'cks are provided with lugs.to receiveand su'p- J port the leasingmembers or rods7 and 8,

Preferably I provide 'means whereby not only are" the'l easerodsormembers cushioned but the weight; of the leasing members andcooperating is taken off theorem; the being supported by the leasing-men'1bers, and hence by the supportof'thelat ter. In this embodiment ofthe invention, Laccomplish this,

result by providing resilienflmembers or springs in operativerelation-to the lease'rods under compression or tension,jto"support-therods. \Preierablyeach block 1 15% provitleii withupper and lowerprojecting lugs leans-1'7 to receive the ends ofggilf-springe I8. and19,-

whereby the vertical movements oirsaid leasing. rods inf conforrnitywitlfl the leveling reqnirprnents of the warp, are cushioned. Hereirrthepprings 19 are looni, are 'he ld inifixed relation so as ,not to partake'warp' caused movement: independently of eachother may bepermitted. Imerit whcn"thcre rsavnriation of tension or otherchang'cin '11u-"wm-p-;it warp thread having broken, 1

'g g vertical movement, the lease rods may b the leas'e rods'iin-d thesupported threadsa'nd drop bars direction of movement of theewar-pvthreads leveling requirements of v the warp,- and mounted-for; H i'such' movement independently oi mcans cooperating with loom stoppingmechanism, whether; e lec tr ical.or In the present type of theinvention, in each bracket:

plurality of such lease rods are ,mounteddornioyement ,mentioned rod,dependent'upon thci rolan ;tions with respectto the whip ,roll, ,Inother words entl y of each othen a differential movement ,rna

represented as mounted recessed sockets of less diameter than thosereceiving the blocks 15, lugs 20,,

if desired,extending-upwardly from the bottom of the sockets 2 toreceive the coil springs, which act to support the-weight of the leaserods and coiipera-ting parts. Any suitable means may be provided to liinit the vertical and independent movement of said lease members or rods.Herein thedownward movement I of said rods is limited by theprovision-,of-shouldei's21 {1, afforded by the reduced diameteriof thesockets where- 75 in the springs :19 are positioned-i :The=.;coilsprings '18 may be received withinthe movab1eplugs22- havingsocketstherein to receive said springs and,provided with downwardly "projectinglugs 23.; Thei-lowere dge of each plug 22 affords-a fixed' stopfor-thoppward 1-80 movement of the lease members or rods, said,plugs-{iii desired, being capable of vertical, adjustment, so that avariable path of movement of theleasing members may be provided.Preferably a-plate 24 isattached. in any suitable manner to theinncrface oteach 58,5

bracket 2, it being provided with s'uitable';vertica llyelongatedslotsflfi, one of which isshown inj vF-ig j t permit thevertical warp caused;movementpf. tl 1e leas rods in accordance. withthercomjpensating r adju'sting movements of the warp.

It is'apparent'that. any suitable mean vided to support the leasero ds,whereby their ivertici It will be observed that,a-:confinedindependentmovement of the warp;supporting; lessevrodsjs -pr vided, suchmovement,:,ing the present typeoflth e i 'vention, being a verticalsliding-movement that not :1 3 only is confined within certainlimits-butiscushioned,

Itis apparent thatinsteadof providingjopa tIfIlIX'IOO pr nted gin thefor movement in an inclined-path;prefembly I do not herein claim broadlywarp supporting lease rods mounted for movement'in; conformity th 4sales mechanical, but'I do claim certain n eansrwherebya; H I

by mounting the Jessertod's for I movement ipdep imparted tothe'severalleaserods, the extentof depends upon theirrespectivegpositions with res ee 1 25 .to the harnesses or the whiproll.v-I do :not herei claim means for supporting the lease. rods total-1etheir a weight oti'tlie warp -sive-in combination withfinde; pendentlymounted lease rods.

Having thus described one type or of l3!) my invention, I desire it tobe understood that although speeific terms are employed, they are usedin a generic and descriptive sense and not for purposes of limitation,the scope of the invention being set forth in the following claims. I l1 1. In a warp stop motion for a loom,' the combination with a pluralityof warp thread snpportingiease rods dividing the warp into sheets andmounted for up and down right line movement independently of each other.a pinrality of series of drop bars supported by the-warp threads whereso separated into sheets, guiding means to guide the loomstopping-movement. of the drop bars. and means cooperating with the loomstopping mechanism and with which an indicating drop b'ar is adapted tocooperate, said guiding means and said means-cooperating with the loomstopping mechanism being supported to permit compensating-movement ofthe lease rods independently thereof .2. In a warp stop motion for aloom, the combination with a plurality of warp thread supporting leaserods dividing the warp into sheets and mounted for cushioned up and downright line movement independently 01' each other in accordance with thecompensating movements of the warp, a plurality of series of drop bars.said series of bars being respectively supported upon the respectivesheets of thewnrp between said lease rods, guiding means to guide theloom stopping movement of the drop bars and means cooperating with theloom stopping mechanism and with which an indicating drop bar is adaptedto cooperate; said lease rods being supported independently of saidguiding means and said coiiperating means so as to'pcrmit the warpcaused movement thereof independently of any movement or said guidingmeans and sa d cooperating means.

3. In a warp stop motion for a loom. the combination with, a pluralityof warp thread supporting Jleasc rods mounted for up and down right linewarp caused move ment independently of each other. of one or more seriesof drop bars supported on the sheets of the'threads formed by said leaserods. guiding mcans to guide the movement of anlndicating drop bar. andmeans cooperating with said indicating drop bar to stop the loom. saidguiding means and said cooperating means being supported independentlyof said series of lease rods.-

4. in a warp stop motion for a ioom,-the combination with a plurality oflease rods mounted for up and down right line movement independently ofeach other in conformity with the leveling requirements of the warp andwithin defined iiinits,'said lease rods dividing the warp into sheets. aplurality of series of drop bars respectively supported upon therespective rclatedseries of sheets'and between said leasc rods. guidingmeans to guide the move ment of an indicating drop bar, and means tocooperate with said indicating drop bur to stop the loom. said guidingmeans and said cooperating means being supported to permit the describedmovement of one or more of said ieasc rods independently of said guidingmeans and said coiiperatlng means.

In a warp stop motion for a loom. the combination with a plurality ofwarp thread supporting lease rods dividing the warp into sheets and.mounted forup and down right line movement independently of each other.

fguiding nieansi'or-such vertical movement of said lease rods. aplurality of series 01' drop bars supported by the warp thread: where soseparated into sheets. guiding means to guide the loom stopping movementot'thedrop bars, and means cooperating with the loom stopping mechaninmand with which an indicating drop bar is adapted tocoiipe'rate, slidguiding means and said means cooperating with the loom stoppingmechanism being supported to permit compenbatin; movement the lease rodsindependently thereof. s

6. In a warp stop motion for a loom. the combination with a plurality ofwarp thread supporting lease rods dividing the warp inio sheets andmounted for up and down right line movement independently of each other.guiding means for such vertical movement. cushioning means for suchmovement, a plurality of series of drop bars supported by the warpthreads where so Separate-l into sheets. guiding means to guide the 100mstopping movement of the drop bars. and means cooperating with the loomstopping mechanism and with which an indicating drop bar is adapted tocooperate said guiding means and said means cooperating with the loomsioppingqnechanism being supported to permit movement of. the leaserods-independently thereof. in conformity with the to quiremcnis of thewarp. I

T. In a warp stop motion for a loom. the combination with a plurality ofwarp thread supporting lease rods dividing the warp into sheets andmounted for up and down right line differential movement with respect toeach other. means to limit such movement, a plurality of series of dropbars supported by the warp threads where so separated into sheets.guiding means to guide the loom stopping movement of the drop bars. andmeans cooperating with the loom stopping mechanism and with which anindicai- ,ing drop bar is adapted to cooperate. said guiding means andsaid means cooperating with the loom stopping mechanism being supportedto permit compensating inovcnn-nt of the lease rods independentlythereof.

5. in a warp stop motion for a loom. the combination with a plurality ofwarp thread supporting lease rods dividing the warp into sheets andmounted for up and down right line movement independently of each other.a pin rality of series of drop bars supported by the warp threads whereso separated into sheets. guiding means for the stopping movement of thedrop bars. and means coiiperating Willi the loom stopping mechanism andwith which an indicating drop bar cooperates. said guiding means andsaid means coflpcrating with the loom stopping mechanism being supp rtedto permit warp caused movement of the lease rods independently thereof.

ii. In a warp stop motioirfor a loom, the combination with a pluralityof warp thrcad supporting lease rods dividing the warp into sheets andmounted for up and down right line movement independently of cach other.a pinrality of series of drop ba rs supported by the warp threads win-reso separated into shccts. means to take the weight ot the said lcaserods off the w.-u-p. guiding means for the stopping movcmcnt of the dropbars, and means cooperatiil; '.\\'iill the inuill stopping mechanism andwith which an im'licaiing drop bar cowl-rates. said guiding means andsaid nicanswiipcratim with the loom stopping mechanism being supportedto pi-rinit warp caused movement of the lease rods imicpcmlcnrlythereof.

10. in a warp sin!) motion for a loom. the combination with a pluralityof warp thread supporting lease rods dividing the warp inlu sheetsamliuounied for up and down right liuc inurciucnt imlcpendcm'tr at eachother, a pinrality ofscrics of drop bars supported by the warp threadswhere so sclml'illcii inio shoots i'csiliciit means to support the leaserods. guiding moans for the stopping movement of the drop bars and mcanscoon-rating with the loom stopping nn-chanism am] with which anindicating drop bar cooperates. said guiding means and said meansooperating with thcloom stopping mechanism being supported to permil.\vnrp caused movement. oi the lease rods indc wndcnily thereof.

in testimony whereof. I have sig'ncd my name to this specification. iniinprcscncc of two subscribing witnesses.

